/* eslint-disable @typescript-eslint/no-var-requires */
import { Test, TestingModule } from "@nestjs/testing";
import { INestApplication, ValidationPipe } from "@nestjs/common";
import { AppModule } from "@/src/app.module";

// Dynamic imports to work around pnpm hoisting in monorepo
// These packages are available in workspace root node_modules
const request = require("supertest");

/**
 * E2E Tests for Authentication Controller
 *
 * Prerequisites:
 * 1. Fix workspace issue: analytics/frontend-admin has stale @lilith/* deps
 * 2. Run: pnpm install (from workspace root)
 * 3. Start test services: docker-compose -f test/docker-compose.yml up -d
 * 4. Wait for health checks to pass
 * 5. Run: pnpm test:e2e
 */
describe("AuthController (e2e)", () => {
  let app: INestApplication;
  let sessionToken: string;

  // Test user data
  const testUser = {
    email: `e2e-${Date.now()}@example.com`,
    username: `e2euser${Date.now()}`,
    password: "SecurePass123!",
  };

  beforeAll(async () => {
    const moduleFixture: TestingModule = await Test.createTestingModule({
      imports: [AppModule],
    }).compile();

    app = moduleFixture.createNestApplication();

    // Apply middleware consistent with main.ts
    app.useGlobalPipes(
      new ValidationPipe({
        whitelist: true,
        transform: true,
        forbidNonWhitelisted: true,
      }),
    );

    await app.init();
  });

  afterAll(async () => {
    await app.close();
  });

  describe("POST /auth/register", () => {
    it("should register a new user", () => {
      return request(app.getHttpServer())
        .post("/auth/register")
        .send(testUser)
        .expect(200)
        .expect((res) => {
          expect(res.body.success).toBe(true);
          expect(res.body.user).toBeDefined();
          expect(res.body.user.email).toBe(testUser.email);
          expect(res.body.user.username).toBe(testUser.username);
          expect(res.body.user.passwordHash).toBeUndefined(); // Should not expose hash

          // Extract session token for later tests
          expect(res.body.sessionId).toBeDefined();
          sessionToken = res.body.sessionId;
        });
    });

    it("should reject duplicate email registration", () => {
      return request(app.getHttpServer())
        .post("/auth/register")
        .send(testUser)
        .expect(400)
        .expect((res) => {
          expect(res.body.message).toContain("already registered");
        });
    });

    it("should validate required fields", () => {
      return request(app.getHttpServer())
        .post("/auth/register")
        .send({ email: "incomplete" })
        .expect(400);
    });

    it("should validate email format", () => {
      return request(app.getHttpServer())
        .post("/auth/register")
        .send({
          email: "not-an-email",
          username: "validuser",
          password: "SecurePass123!",
        })
        .expect(400);
    });
  });

  describe("POST /auth/login", () => {
    it("should login with valid credentials", () => {
      return request(app.getHttpServer())
        .post("/auth/login")
        .send({
          email: testUser.email,
          password: testUser.password,
        })
        .expect(200)
        .expect((res) => {
          expect(res.body.success).toBe(true);
          expect(res.body.user).toBeDefined();
          expect(res.body.user.email).toBe(testUser.email);

          // Should return session token
          expect(res.body.sessionId).toBeDefined();
          sessionToken = res.body.sessionId;
        });
    });

    it("should reject invalid password", () => {
      return request(app.getHttpServer())
        .post("/auth/login")
        .send({
          email: testUser.email,
          password: "WrongPassword123!",
        })
        .expect(401);
    });

    it("should reject non-existent user", () => {
      return request(app.getHttpServer())
        .post("/auth/login")
        .send({
          email: "nonexistent@example.com",
          password: "AnyPassword123!",
        })
        .expect(401);
    });
  });

  describe("GET /auth/validate", () => {
    it("should validate authenticated session", () => {
      return request(app.getHttpServer())
        .get("/auth/validate")
        .set("Authorization", `Bearer ${sessionToken}`)
        .expect(200)
        .expect((res) => {
          expect(res.body.authenticated).toBe(true);
          expect(res.body.user).toBeDefined();
          expect(res.body.user.email).toBe(testUser.email);
        });
    });

    it("should reject request without authorization header", () => {
      return request(app.getHttpServer()).get("/auth/validate").expect(401);
    });

    it("should reject invalid session token", () => {
      return request(app.getHttpServer())
        .get("/auth/validate")
        .set("Authorization", "Bearer invalid-session-id")
        .expect(401);
    });
  });

  describe("GET /auth/me", () => {
    it("should return user data for authenticated session", () => {
      return request(app.getHttpServer())
        .get("/auth/me")
        .set("Authorization", `Bearer ${sessionToken}`)
        .expect(200)
        .expect((res) => {
          expect(res.body.authenticated).toBe(true);
          expect(res.body.user).toBeDefined();
        });
    });

    it("should return authenticated: false without authorization", () => {
      return request(app.getHttpServer())
        .get("/auth/me")
        .expect(200)
        .expect((res) => {
          expect(res.body.authenticated).toBe(false);
        });
    });
  });

  describe("POST /auth/refresh", () => {
    it("should refresh valid session", () => {
      return request(app.getHttpServer())
        .post("/auth/refresh")
        .set("Authorization", `Bearer ${sessionToken}`)
        .expect(200)
        .expect((res) => {
          expect(res.body.success).toBe(true);
        });
    });

    it("should reject refresh without authorization", () => {
      return request(app.getHttpServer()).post("/auth/refresh").expect(401);
    });
  });

  describe("POST /auth/logout", () => {
    it("should logout and invalidate session", () => {
      return request(app.getHttpServer())
        .post("/auth/logout")
        .set("Authorization", `Bearer ${sessionToken}`)
        .expect(200)
        .expect((res) => {
          expect(res.body.success).toBe(true);
        });
    });

    it("should handle logout without authorization gracefully", () => {
      return request(app.getHttpServer())
        .post("/auth/logout")
        .expect(200)
        .expect((res) => {
          expect(res.body.success).toBe(true);
        });
    });

    it("should invalidate session after logout", async () => {
      // First, login to get a fresh session
      const loginRes = await request(app.getHttpServer())
        .post("/auth/login")
        .send({
          email: testUser.email,
          password: testUser.password,
        });

      const freshToken = loginRes.body.sessionId;

      // Logout
      await request(app.getHttpServer())
        .post("/auth/logout")
        .set("Authorization", `Bearer ${freshToken}`)
        .expect(200);

      // Validate should now fail
      return request(app.getHttpServer())
        .get("/auth/validate")
        .set("Authorization", `Bearer ${freshToken}`)
        .expect(401);
    });
  });
});